Palace Midas

Im playing tomb raider gold and i can't figure out how to get the lead bar in the one room that when you pull the block out it turns the room upside down or something i keep sliding how do i get the lead bar.
Thanks

From the doorway above you have to make a standing jump to the platform on your right. Now make a running jump towards the broken pillar. Grab the ledge and pull up. Now make a running jump and grab the ledge of another platform. From there jump towards the next doorway.